4, Q: What is the payment term?A: T/T or L/C, 30% deposit, 70% before shipment.

5, Q: Can you supply samples for testing?A: Yes, Our samples are free for your testing, However, you need to afford the delivery fee (DHL/TNT/EMS)The delivery fee will be deducted from the future bulk order.

6, Q: Do you have any certificate about quality control & management?A: Yes, we have ISO9001:2008, ISO14001:2004.

7, Q: What're your advantages comparing to other suppliers?A: We have been in the fields for more than 30 years, our QC system and Lab system are well-developed, and will promise you qualified and stable quality chemicals, As a manufacturer, competitive price is always available for you.